JP2000061530A - Device for manufacturing super large sized coil of metallic strip and method for manufacturing and handling thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable manufacturing of a super large sized coil having a specific weight of 8000 pounds per inch of coil width above all useful for continuous manufacturing out of a completely heated metal. SOLUTION: A device concerned is a supporting and conveying rig for handling a coil 10c of a continuoudly rolled metallic strip taken-up on a winding mandrel, the rig is equipped with a carriage 20 freely movable vertically and horizontally installed under the coil 10c, and has plural driven rollers arranged on a curved surface pattern forming a saddle-shaped structure in order to contact the coil 10c when the rig 15 ascends, to support the coil 10c, and to turn the coil 10c when the strip is taken-up in advance of further continuous process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device and a winding method for a metal sheet and a strip (hereinafter referred to as "strip"). More specifically, the coil is supported on a plurality of rollers that are driven in a spaced apart manner in a pattern that matches the shape of the coil, and includes a special rig under the coil to carry the coil. , Very large, such as continuously cast or rolled from one complete metal heating, such as manufactured in an electric furnace (eg, manufactured in an electric furnace) The present invention relates to a coil strip winding device and a coil strip winding method.

[0002]

The transport of coils of metal strip by means of special coil handling devices is known, for example, from US Pat. No. 2,430,075. US Patent No. 2,430,07
No. 5 is provided on rails below normal floor height, suitable for vertical movement, and when the coil reaches and should be moved to the desired size, hydraulic cylinders The buggy engaged is shown.

Similarly, US Pat. No. 2,734,405 discloses a coil / loader provided on a rail for transferring a coil from storage to a rolling operation or a coil of rolled material for a desired application. It discloses a unloading cart.

US Pat. No. 3,032,289 shows a coil conveyor that includes a vertically movable rail-mounted carriage for moving coils in and out of a winding location.

US Pat. No. 4,152,919 discloses a long coil conveyor for transferring coils to rolling or processing operations and storage.

US Pat. No. 4,271,959 discloses a V for receiving and supporting a coil to be transported.
1 shows a coil handling device with a moving beam conveyor having a V-shaped fork.

Supports for rolling material (eg, carpeting) are described in US Pat. No. 2,834,5.
No. 58, etc., it is known that a roller is provided to have a curved surface corresponding to the rolling surface and to facilitate the unwinding of the carpet.

Coupling rolling operations into continuous casting equipment has been described, for example, in US Pat. No. 4,698,897, US Pat. No. 4,976,024 and US Pat. No. 5,335,713. Known from the prior art, such as the specification.

Traditionally, strip rolling mills and processing lines have been approximately 500 to 1000 per inch of coil width.
Coils with specific coil weights in the range of pounds (about 9-18 kg per mm of coil width) are manufactured. In extreme cases, conventional specific coil weights can reach 1250 lbs / inch (22.5 kg / mm). In a hot strip mill designed to roll a large number of coil slabs long, the rolled strip is divided by a flying shear before being placed in a coiler.

If such conventionally manufactured coils have to be further processed using a continuous operation, such as a pickling line, then the ends of the separate coils need to be welded together. . The welding process is costly and if the quality of the weld is not closely monitored, the weld joint breaks during cold rolling.
The operation of welding often becomes an obstacle leading to a decrease in production rate. The welding process requires stopping the processing line.
Therefore, the line must include a strip accumulator to process the strip continuously,
This adds additional substantial substantial costs to the facility, operating and maintenance costs, and failures.

In the case of hot strip mills designed to roll long, large numbers of coil slabs, a high speed (about 2000 feet / minute (about 10 m / min) is required to divide the strip before it is placed in the coiler. sec)) flying sheer is required. This process
It requires a high degree of precision control, otherwise strip cobbles occur.

[0012]

SUMMARY OF THE INVENTION The present invention seeks to avoid the problems associated with the use of the above prior art techniques in a single metal-continuous continuous casting and rolling operation. A strip winding station having a mandrel, wherein the coiler mandrel is provided with a strip winding station in which rolled strips are wound, and is a rail-shaped coil support and a transportation rig, wherein the coil has, for example, about 20 tons Is reached to support the rising coil weight in a saddle-shaped or squirrel cage with a curved surface that matches the shape of the coil,
It is characterized by including a coil support and a carrying rig provided with a driven roller which comes into contact with and supports the coil. After winding and removing the mandrel,
The coil support means and associated coils are lowered and transported over the rig to the unwinding location for further continuous processing, where the coil is reduced in weight such that the weight of the coil can be supported by the unwinding mandrel. Until supported and supported on the transport rig.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the prior art continuous casting and rolling apparatus shown in FIG. 3, a continuous casting apparatus 1 includes a shear 2, a reheating furnace 3, an edger 4, and a roughing mill 5. , An equalizing furnace 6, a finish rolling mill 7 (as shown, for example with six stands), a runout table cooling device 8 and a first pinch roll pair. 9A and a flying shear 20 are connected to a slab reduction and strip rolling device and are rotatable mandrel 13
A first coil 10A of standard size is manufactured on A. The second pair of pinch rolls 9B is preferably provided with a second mandrel 13B, on which the strip can be wound, forming a second coil 10B. .

FIG. 1 shows a continuous casting and rolling apparatus similar to the apparatus of FIG. 3 but differs from the apparatus of FIG. 3 in that it includes the super-large coil handling means of the present invention. The extra-large coil handling means includes a mandrel 13C and the rolled strip is, for example, with the aid of 2 to 8 wrapper rollers (two rollers are shown in FIG. 1). The coil is wound on the mandrel to form the super-large coil 10C. This coiler part (c
The oiler station) includes a coil support and carrying rig generally indicated by the reference numeral 15. The coil support and carrying rig includes a carriage 20 below the mandrel 13C and vertically movable with respect to the mandrel by a suitable actuator 18, such as a hydraulic piston / cylinder structure, with wheels 16. is doing. The wheels 16 may be mounted on rails 17 and are movable horizontally on the rails by suitable means, for example an electric motor 24. The carriage 20 has an upper curved surface in the shape of a saddle-shaped structure 14 provided with a plurality of driven rollers 21. The plurality of driven rollers contact the lower surface of the coil 10C and support the coil 10C when the rig 15 is raised. The roller 21 is
It may be driven by any suitable means such as an electric motor (not shown). A water cooled atomizer is provided to cool the rolled strip of coil 10C.

The apparatus of FIG. 1 is a thin slab caster.
r) 1 to a thin slab (for example, a thickness of about 70-90
First, a thin slab of mm steel is produced. Here, steel having a thickness of about 70 to 90 mm means the weight of one heating of about 160 tons of steel. For a coil width of 49 inches (1250 mm), the slab length is approximately 660 feet (200 m). The tips and ends of the slab are cut by the shears 2, then the slab is reheated in the reheat furnace 3. After that, the width m is reduced by the edger 4 and the thickness is reduced by the roughing mill 5, for example, 1.4 to 1.8 inches (35 to 45 mm). After being heated again in the balance furnace 6, the slab is reduced in thickness by the finishing mill 7 (e.g.
025 to 0.625 inches (0.635 to 25.4 m
m)). Run-out table cooling device 8
After cooling inside, the tip of the strip is bent by the pinch roll 9 toward the mandrel 13C of the super-large coiler.
The tip of the strip is wrapped around a mandrel 13C surrounded by wrapping rolls 11 and 12 (the number of rolls is not limited to two,
Other numbers are acceptable). The wrapping rolls 11 and 12, as indicated by the arrow A in FIG.
It can move away from the coil or toward the coil. After the tension of the strip has been established between the mandrel 13C and the last stand of the finishing mill 7, the winding roll is retracted. During winding, the strip is cooled from both sides by a high pressure water spray 19.

When the coil 10C begins to weigh approximately 20-40 tons, the saddle-like structure 14 of the coil support and carrying rig 15 is raised by the actuator 18 to support the coil on the roller 21. . Coil 1
The position of the individual rollers 21 with respect to 0C can be adjusted to give an optimal distribution of the supporting pressure on the coils.

Before or after the winding is completed, the mandrel 13C can be pulled out from the eye of the coil. Instead, the coil support and carrying rig 15 uses the coil 1
With 0C, it can be moved laterally along the axis of the coil eye after winding is complete. Then, as shown in FIG. 2, transferred by the rig 15 along the track 17 connecting the winding and unwinding sections, the coil 10C is unwound and passes through the pinch rolls 22 for further continuous processing. To the processing unit 23. In the rewinding section, the coil winding process is reversed. Initially, the coil 10C is supported by the rig 15C and its driven roller 21 is used to rotate the coil. After the weight of the coil becomes less than 20-40 tons, the rig 15 descends, the coil 10C is supported by the unwinding mandrel 13D, and the rig 15 is attached to the winding portion as shown in FIG. Will be returned.

[0018]

As mentioned above, the application of the present invention enables the production of very large coils having a specific weight of 8000 pounds per inch of coil width, especially for continuous production from fully heated metal. Useful, which allows the casting to be cut into individual lengths and then rolled separately,
It avoids many of the problems and costs associated with the prior art, including steps that require re-welding to one another for subsequent sequential processing.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of winding, coil supporting and carrying means according to an embodiment of the present invention.

FIG. 2 is a side view of a rig that supports and carries a coil provided in a rewinding unit prior to further continuous processing.

FIG. 3 is a side view illustrating a conventional continuous casting and rolling apparatus.

[Explanation of symbols]

1 Continuous casting equipment 2 sheer 5 roughing mill 10C coil 13A, 13B, 13C Mandrel 15 rigs 20 carriage

   ─────────────────────────────────────────────────── ─── Continued front page    (71) Applicant 592229340             International rolling mill             Consultants Incorporated             INTERNATIONAL ROLL             NGMILL CONSULTANTS,             INC.             United States 15222 Pennsylvania,             Pittsburgh Fort Ducanbe             Lubad 948 (72) Inventor Bradymir Bee Ginsburg             United States, 15238 Pennsylvania             State, Pittsburgh, Driftwood Dora             Eve 612

Claims (16)

[Claims] 1. A support and transport rig for handling a coil of continuously rolled metal strip wound on a winding mandrel, the vertical and horizontal orientation being provided under the coil. Saddle-shaped carriage with movable carriage for contacting and supporting the coil when the rig is raised and for rotating the coil during strip winding prior to further continuous processing. A support and transport rig comprising a plurality of driven rollers provided in a curved pattern forming the structure of FIG. 2. A means for raising said carriage during winding for supporting the coil when the weight of said coil reaches too great a weight for supporting by a mandrel, and a further continuous strip. The rig of claim 1, further comprising means for moving the rig and completed coil to a rewind section for rewinding prior to processing. 3. A rewind mandrel for supporting the coil when it is conveyed to the rewind section by the rig, and when the weight of the coil becomes small enough to be supported only by the rewind mandrel. The rig of claim 2 further comprising means for lowering the carriage during rewinding of the strip. 4. The rig according to claim 3, wherein the coil is a super-large coil continuously formed by heating metal once. 5. An apparatus for continuously rolling a rolled metal strip into a super-sized coil, winding, completely heating the metal, and successively treating the strip. A means for producing metal strips, rolling and winding on a winding mandrel, and a vertically and horizontally movable rail-type coil support and carrying rig under the coil, comprising: Of a coil having a curved pattern corresponding to the shape of the rig and having a plurality of driven rollers which are mutually phosphorous, and when the weight of the coil reaches a weight that can no longer be supported by the winding mandrel alone, the rig is raised. When the weight of the coil reaches a weight that can no longer be supported only by the winding mandrel, the coil comes into contact with the coil when the rig rises, And a device adapted to support the coil and to rotate the coil to rewind the strip as the rig conveys the rig horizontally to an unwind section prior to further continuous processing. 6. The apparatus of claim 5, wherein said coil has a specific weight of up to about 8000 pounds per inch of coil width. 7. A caster for continuously casting up to about 160 tonnes of steel once in the form of a thin slab having a length of greater than about 600 feet, and a slab thickness of about 1.4-.
Roughing mill for reduction to 1.8 inches, finishing mill for rolling the slab into continuous strips about 0.025 to about 0.625 inches thick, and winding on a winding mandrel. 7. A device according to claim 6, comprising means for cooling the strip so rolled. 8. A method of handling a continuously rolled coil of metal strip, the take-up mandrel provided in a take-up section before the coil reaches a weight that is too large to be supported by the take-up mandrel. Winding and supporting the strip on and mounted underneath the coil having a curved pattern that substantially matches the shape of the coil and mounted on a carriage movable vertically and horizontally Providing additional support to the coil by a plurality of driven rollers provided therein, disengaging the coil and the winding mandrel from the engagement, the carriage, and the unwinding portion of the completed and thus supported coil. To the coil, mounting the supported coil on an unwind mandrel, and prior to further continuous processing of the strip, the carp. Rotating the driven roller to rewind the reel, lowering the carriage when the weight of the coil is reduced to a value that can be supported by the rewind mandrel, and returning the carriage to the winding section. The method consisting of and. 9. The method of claim 8 wherein the winding mandrel is withdrawn from the coil eye after winding is complete. 10. The method of claim 8 wherein the winding mandrel is withdrawn from the coil eye before winding is complete. 11. The method of claim 11 including the step of moving the carriage axially of the winding mandrel to remove the coil from the winding mandrel. 12. A process of continuously casting and rolling a metal strip of fully heated metal and winding the strip to form a very large coil having a weight of about 8000 pounds per inch of coil width. 9. The method of claim 8, comprising the steps of: 13. A coil is continuously wound on the winding mandrel for a length of strip until it reaches a weight close to that which can be supported by the winding mandrel, and then provided under the coil. Supporting the coil on the carriage, and 8000 per inch of coil width
A method of handling a coil of metal strip comprising the step of completing the winding of said strip in the form of a very large coil having a weight up to pounds. 14. Mounted on the carriage,
14. The method of claim 13, wherein the carriage is configured with a pattern that substantially conforms to the shape of the coil. 15. A driven coil for moving the completed coil to an unwind section while being supported by rollers mounted on the carriage, where the strip is unwound prior to further processing of the strip. 15. The method of claim 14, comprising rotating the coil with a roller. 16. A method of handling ultra-large coils of continuous metal strip having a coil weight of up to about 8000 pounds per inch of coil width, the winding up to a weight approaching a weight that the mandrel cannot support. Winding the strip on a mandrel, then constituted by a curved pattern that substantially matches the shape of the coil,
A step of supporting the coil on a plurality of driven rollers that can be mounted on a vertically and horizontally movable carriage that can be provided under the coil, and that completes winding and is supported on the carriage and the carriage. Moving the coil to a rewind section and rotating the driven roller to rewind the coil prior to further continuous processing of the strip in the rewind section.